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SEGMENT INFORMATION (Operating information by segment) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 28, 2019 | Jun. 29, 2019 | Mar. 30, 2019 | Dec. 29, 2018 | Sep. 29, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 30, 2017 | Sep. 28, 2019 | Sep. 29, 2018 | Sep. 30, 2017
Net revenue: |  |  |  |  |  |  |  |  |  |  |  |
Net revenue |  | $ 139,827 | $ 127,109 | $ 115,908 | $ 157,208 | $ 184,824 | $ 268,834 | $ 221,772 | $ 213,691 | $ 540,052 | $ 889,121 | $ 809,041
Cost of sales : |  |  |  |  |  |  |  |  |  |  |  |
Cost of sales |  |  |  |  |  |  |  |  |  | 285,462 | 479,680 | 426,947
Gross profit : |  |  |  |  |  |  |  |  |  |  |  |
Gross profit |  | 65,438 | 58,780 | 55,573 | 74,799 | 85,823 | 126,969 | 99,447 | 97,202 | 254,590 | 409,441 | 382,094
Operating expenses: |  |  |  |  |  |  |  |  |  |  |  |
Operating expenses |  |  |  |  |  |  |  |  |  | 232,980 | 242,809 | 269,011
Income from operations: |  |  |  |  |  |  |  |  |  |  |  |
Income from operations |  | $ 7,693 | $ 1,827 | $ (2,465) | $ 14,555 | $ 24,574 | $ 64,463 | $ 38,436 | $ 39,159 | 21,610 | 166,632 | 113,083
Capital Equipment |  |  |  |  |  |  |  |  |  |  |  |
Net revenue: |  |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  |  | 386,820 | 719,390 | 651,934
Income from operations: |  |  |  |  |  |  |  |  |  |  |  |
Income from operations | [1] |  |  |  |  |  |  |  |  | (12,577) | 132,563 | 107,115
APS [Member] |  |  |  |  |  |  |  |  |  |  |  |
Net revenue: |  |  |  |  |  |  |  |  |  |  |  |
Net revenue |  |  |  |  |  |  |  |  |  | 153,232 | 169,731 | 157,107
Income from operations: |  |  |  |  |  |  |  |  |  |  |  |
Income from operations | [2] |  |  |  |  |  |  |  |  | $ 34,187 | $ 34,069 | $ 5,968
[1] |
|  | Fiscal
(in thousands) |  | 2019 |  | 2018 |  | 2017
Net revenue: |  |  |  |  |  |
Capital Equipment |  | $ | 386,820 |  |  | $ | 719,390 |  |  | $ | 651,934 |
APS |  | 153,232 |  |  | 169,731 |  |  | 157,107 |
Net revenue |  | 540,052 |  |  | 889,121 |  |  | 809,041 |
Income from operations: |  |  |  |  |  |
Capital Equipment |  | (12,577 | ) |  | 132,563 |  |  | 107,115 |
APS |  | 34,187 |  |  | 34,069 |  |  | 5,968 |
Income from operations |  | $ | 21,610 |  |  | $ | 166,632 |  |  | $ | 113,083 |
[2] |
|  | Fiscal
(in thousands) |  | 2019 |  | 2018 |  | 2017
Net revenue: |  |  |  |  |  |
Capital Equipment |  | $ | 386,820 |  |  | $ | 719,390 |  |  | $ | 651,934 |
APS |  | 153,232 |  |  | 169,731 |  |  | 157,107 |
Net revenue |  | 540,052 |  |  | 889,121 |  |  | 809,041 |
Income from operations: |  |  |  |  |  |
Capital Equipment |  | (12,577 | ) |  | 132,563 |  |  | 107,115 |
APS |  | 34,187 |  |  | 34,069 |  |  | 5,968 |
Income from operations |  | $ | 21,610 |  |  | $ | 166,632 |  |  | $ | 113,083 |

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